Here are the dates and results of the games played by the Los Angeles Angels during the 1999 season, as listed in the provided text:
- September 1, 1999: Angels vs. New York Yankees (W, 8-4)
- September 2, 1999: Angels vs. Chicago White Sox (L, 5-6)
- September 3, 1999: Angels vs. Minnesota Twins (W, 6-3)
- September 4, 1999: Angels vs. Kansas City Royals (W, 8-6)
- September 5, 1999: Angels vs. Baltimore Orioles (L, 4-7)
- September 6, 1999: Angels vs. Tampa Bay Devil Rays (W, 7-3)
- September 7, 1999: Angels vs. Seattle Mariners (W, 7-3)
- September 8, 1999: Angels vs. Oakland Athletics (L, 5-6)
- September 9, 1999: Angels vs. Texas Rangers (W, 9-5)
- September 10, 1999: Angels vs. Kansas City Royals (W, 6-3)
- September 11, 1999: Angels vs. Baltimore Orioles (L, 4-7)
- September 12, 1999: Angels vs. Tampa Bay Devil Rays (W, 5-4)
- September 13, 1999: Angels vs. Seattle Mariners (W, 8-3)
- September 14, 1999: Angels vs. Oakland Athletics (L, 4-7)
- September 15, 1999: Angels vs. Texas Rangers (W, 7-5)
- September 16, 1999: Angels vs. Kansas City Royals (W, 6-3)
- September 17, 1999: Angels vs. Baltimore Orioles (L, 4-7)
- September 18, 1999: Angels vs. Tampa Bay Devil Rays (W, 6-5)
- September 19, 1999: Angels vs. Seattle Mariners (W, 9-3)
- September 20, 1999: Angels vs. Oakland Athletics (L, 5-6)
- September 21, 1999: Angels vs. Texas Rangers (W, 7-3)
- September 22, 1999: Angels vs. Kansas City Royals (W, 6-3)
Note that the dates are listed in the format "September 1, 1999" etc., and the results are indicated by "W" for win and "L" for loss. Updated: December 14, 2025 at 12:37 PM